Improvement in watchmakers  vises



tn'itzt atzt .ARTHUR W. BUSH, or sr. CLOUD, MINNESOTA.

Laan Patent No; 108,877, dated' November 1, 1870.

IMPRovl-:MENT IN wATcHMAKERs vlsEs.

The Schedule referred to in these Letters Patent and making pari: of the' same.

'description of the same, reference. being had to the accompanying drawing and to the letters of refer' ence marked thereon making part of this specifica' tion, lin which- Figure lis a top-plan view.

Figure 2 'is a bottom-plan view of thc main plate or arm with At-he sliding jaw in position. Figure 3 is a vertical sectional view on the line x as,

Figure 4 is a top-plan view of the sliding jaw and spring detached from the main plate or arm. L

The object of my present invention is to furnish a convenient tool or vise for the use of the makers' and repairers of watches, and which, while chiefly designed for holding the stump on the under side of .the second-hand, for the purpose of tiling and reaming out the necessary socket or recess therein, is also admirably adapted to many other branches ofthe fine,

work peculiar to this art.f

Heretoforc the second-hand, during the process al luded to, has been usually held between the fingers of the watchmaker, which was always more or less objectionable and inconvenient, and in view .of which the advantages of a cheap, convenient,.and secure instrument, such as hereinafter described, as an'aid in the work, will readily suggest themselves.A

The invention consists in cutting in a ilat metallic vplate an obiongslot, and inserting iu saidslotfa short sliding plate. y The head of the slot and the forward end of the sliding plate furnish the jaws of the vise, and are/prof vided7 -at their centers, with semioircular recesses, which' insure the secure retention of the stump of the second-hand oi' ,the watch during` the process of filing and reaming the same.

The slot and sliding plate are. beveled, so as to guide the movement of the latter in thea former, and prevent the plate from being drawn out ofthe slot by the tension of the spring.

To the main and sliding plates are secured the ends of a spring.

This spring is oi' such length and attached at such a point to the main plat-e as to give ita slight hooped form, its force being such as to draw tliesliding'pl'ate against the rear cnd of the slot in the main plate.

The sliding 'plate is operated by means of a clamp` slide, which eucircles both the main plate' and spring, driving the jaws of the vise together by depressing the spring.

To enable others skilled in the' art to make and use my invention, I will now proceed to describe its construction'a'nd operation. y

A is the main plate or stock of the device, and may be constructed of any-suitable metal or other mate. rial.

yThis stock is a dat plate at its forward end, and

rounded at its rear end, so as to afford a convenient handle for the workman to grasp.

A' is an oblong slot cut. in the flat portion of'rthe stock A.

The forward end of this slot is provided with-a semicircular recess, a, as clearly shown in g. 2, and

is' beveled at its sides, as clearly shown ata' a,

OB is the sliding jaw of the vise, and consists. of a short rect-angularplate, made of metal or other suitable material.

This plate B, like the stationary. jaw, isrecessed atl), and is also provided with. beveled sides b b', corresponding with the sides a' a' of the slot A'.

This plate B is retained in position by the spring C,

to which it is secured by the bolt C. v

The projecting edges c c of the spring C rest on the upper face of the plate A, as clearly shown in fig.

3, whereby all danger of the plate B falling out of the slot is securely guarded against. l

G is a Hat metal-plate spring.

One end-of this springis attached to the stock A,

and the other to the sliding jaw or plate B, as clearly shown in fig. 1. v I' This spring is of such length and is attachedto the plate or stock A, at 'such a point that when not depressed -by the clamp-slide'E, or itsequivalent'device of" a hoop forni, its tension draws theplate or jaw B against the rear end of the slot A.

D is an ordinary clamp-slide, and encircles the plate or stock A and spring C.

' From the foregoing description the operation of the` -device can be readily understood.

As has been stated, the spring() draws the. sliding 'jaw B against the rear end of theslot A'.

When it is to be used, 'the clamp-.slide Dis passed over the plateA and spring C, as shown in fig. 1. This depresses the spring and drives the jaws together, the stump of the second-hand of the watch being iirinly held in the recesses -a b; V

Having thus fully described myl invention, What I claim therein as new, and desire to secure by Letters Patent of the United States, iS*- i The slotted plate or stock A, sliding plate B, spring G, and clamp-slide D, combined vand arranged as shown, so as to furnish a' watclimakei"s tool or vise,

substantially as described.

In testimony whereof, I' have signed my name to this specication in `the presence of two subscribing witnesses. i ARTHUR W BUSH.

Witnesses:

GEO. L. Hays, Z. H. MORSE. 

